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SAE-AISI 1090 Steel vs. S44626 Stainless Steel

Both SAE-AISI 1090 steel and S44626 stainless steel are iron alloys. They have 72% of their average alloy composition in common. There are 31 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI 1090 steel and the bottom bar is S44626 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 220 to 280
190
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 11
23
Fatigue Strength, MPa 320 to 380
230
Poisson's Ratio 0.29
0.27
Shear Modulus, GPa 72
80
Shear Strength, MPa 470 to 570
340
Tensile Strength: Ultimate (UTS), MPa 790 to 950
540
Tensile Strength: Yield (Proof), MPa 520 to 610
350

Thermal Properties

Latent Heat of Fusion, J/g 240
300
Maximum Temperature: Mechanical, °C 400
1100
Melting Completion (Liquidus), °C 1450
1440
Melting Onset (Solidus), °C 1410
1390
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 50
17
Thermal Expansion, µm/m-K 12
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.1
2.3
Electrical Conductivity: Equal Weight (Specific), % IACS 8.2
2.7

Otherwise Unclassified Properties

Base Metal Price, % relative 1.8
14
Density, g/cm3 7.8
7.7
Embodied Carbon, kg CO2/kg material 1.4
2.9
Embodied Energy, MJ/kg 19
42
Embodied Water, L/kg 46
160

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 82 to 91
110
Resilience: Unit (Modulus of Resilience), kJ/m3 730 to 1000
300
Stiffness to Weight: Axial, points 13
15
Stiffness to Weight: Bending, points 24
26
Strength to Weight: Axial, points 28 to 34
19
Strength to Weight: Bending, points 24 to 27
19
Thermal Diffusivity, mm2/s 13
4.6
Thermal Shock Resistance, points 25 to 31
18

Alloy Composition

Carbon (C), % 0.85 to 1.0
0 to 0.060
Chromium (Cr), % 0
25 to 27
Copper (Cu), % 0
0 to 0.2
Iron (Fe), % 98 to 98.6
68.1 to 74.1
Manganese (Mn), % 0.6 to 0.9
0 to 0.75
Molybdenum (Mo), % 0
0.75 to 1.5
Nickel (Ni), % 0
0 to 0.5
Nitrogen (N), % 0
0 to 0.040
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0
0 to 0.75
Sulfur (S), % 0 to 0.050
0 to 0.020
Titanium (Ti), % 0
0.2 to 1.0